Home / 21,702.39-29,952.49-13,745.36

Finding the Fourth Proportional to 21,702.39, 29,952.49 and 13,745.36

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Solution

The fourth proportional to 21,702.39, 29,952.49 and 13,745.36 is: 18,970.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.39 : 29,952.49 = 13,745.36 : x
  2. Step 2: Convert to fraction form
    21,702.39/29,952.49 = 13,745.36/x
  3. Step 3: Cross multiply
    21,702.39x = 29,952.49 × 13,745.36
  4. Step 4: Simplify right side
    21,702.39x = 411,707,757.95
  5. Step 5: Solve for x
    x = 411,707,757.95/21,702.39
  6. Step 6: Final answer
    x = 18,970.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.